Environmental heating and cooling; fluid handling and sanitary e – Fluid handling or treatment equipment – Hand or foot operated pump or well curb
Patent
1989-04-19
1991-07-02
Lucas, Susan J.
Environmental heating and cooling; fluid handling and sanitary e
Fluid handling or treatment equipment
Hand or foot operated pump or well curb
D23200
Patent
active
D03179702
REFERENCES:
patent: 3549015 (1970-12-01), Willinger
patent: 4023305 (1977-05-01), Harschel
patent: 4035299 (1977-07-01), Vroeginday
patent: 4073305 (1978-02-01), Brown et al.
patent: 4414997 (1983-11-01), Jacobson et al.
patent: 4552515 (1985-11-01), Endo
Lucas Susan J.
Tung M. H.
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